High resolution & Hight Hertz problem

I am having a problem achieving a viewable resolution...
Here are the components i'm using:
Sanyo 26" LCD HDTV: http://www.overstock.com/Electronics/Sanyo-DP26647-26-inch-Widescreen-LCD-HMDI-HDTV-Refurbished/2897272/product.html

AIT 5570 made by ASUS: http://www.newegg.com/Product/Product.aspx?Item=N82E16814121363&nm_mc=TEMC-RMA-Approvel&cm_mmc=TEMC-RMA-Approvel-_-Content-_-text-_-

They are hooked up using this HDMI cable: http://www.newegg.com/Product/Product.aspx?Item=N82E16882021124&nm_mc=TEMC-RMA-Approvel&cm_mmc=TEMC-RMA-Approvel-_-Content-_-text-_-

The "recommended" settings are 1280x760 running at 59-60 hertz. When I try to scale the resolution beyond that, even one setting, (1920x1080 is what I would ideally use) the hertz drop to 20-30(interlaced), and parts of my screen begin flickering. Is there any known fix/tweak to this other than buying a new monitor? There is no VGA hookup on my TV, if that is a known fix.
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More about high resolution hight hertz problem
  1. The HDTV you bought is 720p not 1080p. The maximum resolution is 1366 x 768 which explains why you are having issues with 1920 x 1080. You will need to buy a 1080p HDTV if you want 1920 x 1080 resolution.
  2. So I can't even select anything greater than my current 1280x760?
  3. Like I stated, 1366 x 768 is the max. The specs of the HDTV clearly stated 1366 x 768.
  4. So is there any way to add 1366x768 to the list of options using windows 7? It goes from 1280x720 to 1280x768 (where it begin flickering) with no other option for a slightly bigger resolution x768 while still in wide screen.

    Edit: Earlier today when I was exiting SC2 it left my resolution at 1920x1200 without flickering for a few moments before Windows(?) corrected the display to 1280x720.
  5. Then you are probably to what your video card will allow. Not really familiar with 720p HDTVs.
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